Foot switch



FIG. 1 is a top plan view of a foot switch showing our design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevational view thereof, the opposite side being a mirror image thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a foot switch, as shown and described. 